Thanks for the kind words, mortesv!
The trench does seem a bit wide, but I happen to like the way it looks. Bob is also right, she's too narrow, by about 8-10 studs. You can tell because the left and right engines are too close together -- I think I used the resin model for a guide when I began the design. Stupid disproportionate resin model! And the city is a bit too narrow and low by 2/3 a stud. It "pops out" more in the studio model. And the tail is 4 studs too long, and needs to slope inward more. Whew. I'm exhausted :)
You can see how problematic this can get. In fact, even the "perfect" reference guides are not so perfect. This was Aeroeza's render based off sketches:
As you can see, the ridgeline of the city in the tail should not be straight.
And the engine flap in the middle is much wider in the studio model. And (not shown here) the flap in the belly groove is too narrow. And overall, I still think this render is a bit too wide-- Ahhhh! You see how frustrating this is? In the end, you have to borrow design elements from 10 different sources.
You also have to take into account inherent Lego size issues. At 12.5 feet, her engine cowlings should technically be something like 5.22 studs wide, well, I only have rims 5.5 studs wide. Her city blocks should be 3.63 studs wide. Well, I need an integer. I'll use 4.
The real question now is should I bother to make adjustments during construction, or just build the ship exactly the way it is? Make her MY interpretation. I'm not quite sure yet.